Really? I was unaware of that. I am working in Vermont, where they use HEC-RAS to get abutment scour for a rough estimate. From the impression they gave me it seemed that many state DOT's used this protocol. Would you mind me asking what other state DOT's do in their estimates for flow design...
I'm working in HEC-RAS on a scour research project. My issue is that the values I am getting for abutment scour are artificially high. From what I understand, many DOT's ignore HEC-RAS's abutment scour outputs because in almost all cases HEC-RAS grossly overestimates how deep the scour will be...